SOLUTION: If a skydiver jumps from an airplane at a height of 8256 feet, then for the first 5 seconds, her height above the earth is approximated by the formula: h=-t^2+8256 . How many sec
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-> SOLUTION: If a skydiver jumps from an airplane at a height of 8256 feet, then for the first 5 seconds, her height above the earth is approximated by the formula: h=-t^2+8256 . How many sec
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Question 141175: If a skydiver jumps from an airplane at a height of 8256 feet, then for the first 5 seconds, her height above the earth is approximated by the formula: h=-t^2+8256 . How many seconds does it take her to reach 8000 feet? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! If a skydiver jumps from an airplane at a height of 8256 feet, then for the first 5 seconds, her height above the earth is approximated by the formula: h=-t^2+8256 . How many seconds does it take her to reach 8000 feet?
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h(t) = -t^2+8256
-t^2 + 8256 = 8000
-t^2 = -256
t = sqrt(256) = 16 seconds
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Cheers,
Stan H.
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